I thought I would toss this into the ring. A couple months ago I was looking at the Australian Navy historical site, and I blundered upon a fascinating nugget. The article was about Australian cruiser colors in the Med in 1939. It cited a letter written by an Australian cruiser enlisted man. He was telling about how the deckhands mixed A.P. 507C "Mediterranean Grey." First of all, he claimed the crews chose the shades, not the officers, not the brass. He wrote that the mixes were hardly scientific, like contemporary paint company products for warships. The customary basic shade was the slightly bluish light gray of the Mediterranean Fleet.
Here is where it became interesting. The sailor claimed one Australian cruiser's crew decided to add more blue to the basic Med Grey. Another Australian cruiser's crew liked the variant color so much they elected to use yet more blue in their mix. The result was a cruiser which was more blue than gray. Thus, the Australian cruiser detachment's colors were highly individualistic, and, in two cases, decidedly non-standard.
Here is the kicker. I stupidly lost the bookmark for this article. I have searched the site over and over to try to find it. Here is the site if anybody wishes to have a go at trying to find the article. I swear on a copy of Queen's Regulations this story is not a malicious joke on the RN modeling community! If anybody can find it, I will be in their debt.